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    < c | string
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    m Shorten template names. Use {{lc}} where appropriate.
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    m Update links.
    Line 8: Line 8:
    {{dsc h2 | Character classification}}
    {{dsc h2 | Character classification}}
    {{dsc header | ctype.h}}
    {{dsc header | ctype.h}}
    {{dsc inc | c/string/byte/dcl list isalnum}}
    {{dsc inc | c/string/byte/isalnum}}
    {{dsc inc | c/string/byte/dcl list isalpha}}
    {{dsc inc | c/string/byte/isalpha}}
    {{dsc inc | c/string/byte/dcl list islower}}
    {{dsc inc | c/string/byte/islower}}
    {{dsc inc | c/string/byte/dcl list isupper}}
    {{dsc inc | c/string/byte/isupper}}
    {{dsc inc | c/string/byte/dcl list isdigit}}
    {{dsc inc | c/string/byte/isdigit}}
    {{dsc inc | c/string/byte/dcl list isxdigit}}
    {{dsc inc | c/string/byte/isxdigit}}
    {{dsc inc | c/string/byte/dcl list iscntrl}}
    {{dsc inc | c/string/byte/iscntrl}}
    {{dsc inc | c/string/byte/dcl list isgraph}}
    {{dsc inc | c/string/byte/isgraph}}
    {{dsc inc | c/string/byte/dcl list isspace}}
    {{dsc inc | c/string/byte/isspace}}
    {{dsc inc | c/string/byte/dcl list isblank}}
    {{dsc inc | c/string/byte/isblank}}
    {{dsc inc | c/string/byte/dcl list isprint}}
    {{dsc inc | c/string/byte/isprint}}
    {{dsc inc | c/string/byte/dcl list ispunct}}
    {{dsc inc | c/string/byte/ispunct}}


    {{dsc h2 | Character manipulation}}
    {{dsc h2 | Character manipulation}}
    {{dsc inc | c/string/byte/dcl list tolower}}
    {{dsc inc | c/string/byte/tolower}}
    {{dsc inc | c/string/byte/dcl list toupper}}
    {{dsc inc | c/string/byte/toupper}}
    {{dsc end}}
    {{dsc end}}
    {{c/string/character classes}}
    {{c/string/character classes}}
    Line 30: Line 30:
    {{dsc h2 | Conversions to numeric formats}}
    {{dsc h2 | Conversions to numeric formats}}
    {{dsc header | stdlib.h}}
    {{dsc header | stdlib.h}}
    {{dsc inc | c/string/byte/dcl list atof}}
    {{dsc inc | c/string/byte/atof}}
    {{dsc inc | c/string/byte/dcl list atoi}}
    {{dsc inc | c/string/byte/atoi}}
    {{dsc inc | c/string/byte/dcl list strtol}}
    {{dsc inc | c/string/byte/strtol}}
    {{dsc inc | c/string/byte/dcl list strtoul}}
    {{dsc inc | c/string/byte/strtoul}}
    {{dsc inc | c/string/byte/dcl list strtof}}
    {{dsc inc | c/string/byte/strtof}}
    {{dsc header  | inttypes.h}}
    {{dsc header  | inttypes.h}}
    {{dsc inc | c/string/byte/dcl list strtoimax}}
    {{dsc inc | c/string/byte/strtoimax}}


    {{dsc h2 | String manipulation}}
    {{dsc h2 | String manipulation}}
    {{dsc header | string.h}}
    {{dsc header | string.h}}
    {{dsc inc | c/string/byte/dcl list strcpy}}
    {{dsc inc | c/string/byte/strcpy}}
    {{dsc inc | c/string/byte/dcl list strncpy}}
    {{dsc inc | c/string/byte/strncpy}}
    {{dsc inc | c/string/byte/dcl list strcat}}
    {{dsc inc | c/string/byte/strcat}}
    {{dsc inc | c/string/byte/dcl list strncat}}
    {{dsc inc | c/string/byte/strncat}}
    {{dsc inc | c/string/byte/dcl list strxfrm}}
    {{dsc inc | c/string/byte/strxfrm}}


    {{dsc h2 | String examination}}
    {{dsc h2 | String examination}}
    {{dsc header | string.h}}
    {{dsc header | string.h}}
    {{dsc inc | c/string/byte/dcl list strlen}}
    {{dsc inc | c/string/byte/strlen}}
    {{dsc inc | c/string/byte/dcl list strcmp}}
    {{dsc inc | c/string/byte/strcmp}}
    {{dsc inc | c/string/byte/dcl list strncmp}}
    {{dsc inc | c/string/byte/strncmp}}
    {{dsc inc | c/string/byte/dcl list strcoll}}
    {{dsc inc | c/string/byte/strcoll}}
    {{dsc inc | c/string/byte/dcl list strchr}}
    {{dsc inc | c/string/byte/strchr}}
    {{dsc inc | c/string/byte/dcl list strrchr}}
    {{dsc inc | c/string/byte/strrchr}}
    {{dsc inc | c/string/byte/dcl list strspn}}
    {{dsc inc | c/string/byte/strspn}}
    {{dsc inc | c/string/byte/dcl list strcspn}}
    {{dsc inc | c/string/byte/strcspn}}
    {{dsc inc | c/string/byte/dcl list strpbrk}}
    {{dsc inc | c/string/byte/strpbrk}}
    {{dsc inc | c/string/byte/dcl list strstr}}
    {{dsc inc | c/string/byte/strstr}}
    {{dsc inc | c/string/byte/dcl list strtok}}
    {{dsc inc | c/string/byte/strtok}}


    {{dsc h2 | Character array manipulation}}
    {{dsc h2 | Character array manipulation}}
    {{dsc header | string.h}}
    {{dsc header | string.h}}
    {{dsc inc | c/string/byte/dcl list memchr}}
    {{dsc inc | c/string/byte/memchr}}
    {{dsc inc | c/string/byte/dcl list memcmp}}
    {{dsc inc | c/string/byte/memcmp}}
    {{dsc inc | c/string/byte/dcl list memset}}
    {{dsc inc | c/string/byte/memset}}
    {{dsc inc | c/string/byte/dcl list memcpy}}
    {{dsc inc | c/string/byte/memcpy}}
    {{dsc inc | c/string/byte/dcl list memmove}}
    {{dsc inc | c/string/byte/memmove}}


    {{dsc h2 | Miscellaneous}}
    {{dsc h2 | Miscellaneous}}
    {{dsc header | string.h}}
    {{dsc header | string.h}}
    {{dsc inc | c/string/byte/dcl list strerror}}
    {{dsc inc | c/string/byte/strerror}}
    {{dsc end}}
    {{dsc end}}


    Revision as of 05:40, 1 June 2013

     
    C
     
    Strings library
     
    Null-terminated byte strings
    Functions
    Character manipulation
    Conversions to and from numeric formats
    String manipulation
    String examination
    Memory manipulation
    Miscellaneous
    (C11)(C11)
     

    A null-terminated byte string (NTBS) is a sequence of nonzero bytes followed by a byte with value zero (the terminating null character). Each byte in a byte string encodes one character of some character set. For example, the character array {'\x63','\x61','\x74','\0'} is an NTBS holding the string "cat" in ASCII encoding.

    Functions

    Character classification
    Defined in header <ctype.h>
    		checks if a character is alphanumeric
    (function) [edit]
    		checks if a character is alphabetic
    (function) [edit]
    		checks if a character is lowercase
    (function) [edit]
    		checks if a character is an uppercase character
    (function) [edit]
    		checks if a character is a digit
    (function) [edit]
    		checks if a character is a hexadecimal character
    (function) [edit]
    		checks if a character is a control character
    (function) [edit]
    		checks if a character is a graphical character
    (function) [edit]
    		checks if a character is a space character
    (function) [edit]
    (C99)
    		 checks if a character is a blank character
    (function) [edit]
    		checks if a character is a printing character
    (function) [edit]
    		checks if a character is a punctuation character
    (function) [edit]
    Character manipulation
    		converts a character to lowercase
    (function) [edit]
    		converts a character to uppercase
    (function) [edit]
    ASCII values characters

    iscntrl
    iswcntrl

    isprint
    iswprint

    isspace
    iswspace

    isblank
    iswblank

    isgraph
    iswgraph

    ispunct
    iswpunct

    isalnum
    iswalnum

    isalpha
    iswalpha

    isupper
    iswupper

    islower
    iswlower

    isdigit
    iswdigit

    isxdigit
    iswxdigit

    decimal hexadecimal octal
    0–8 \x0–\x8 \0–\10 control codes (NUL, etc.) ≠0 0 0 0 0 0 0 0 0 0 0 0
    9 \x9 \11 tab (\t) ≠0 0 ≠0 ≠0 0 0 0 0 0 0 0 0
    10–13 \xA–\xD \12–\15 whitespaces (\n, \v, \f, \r) ≠0 0 ≠0 0 0 0 0 0 0 0 0 0
    14–31 \xE–\x1F \16–\37 control codes ≠0 0 0 0 0 0 0 0 0 0 0 0
    32 \x20 \40 space 0 ≠0 ≠0 ≠0 0 0 0 0 0 0 0 0
    33–47 \x21–\x2F \41–\57 !"#$%&'()*+,-./ 0 ≠0 0 0 ≠0 ≠0 0 0 0 0 0 0
    48–57 \x30–\x39 \60–\71 0123456789 0 ≠0 0 0 ≠0 0 ≠0 0 0 0 ≠0 ≠0
    58–64 \x3A–\x40 \72–\100 :;<=>?@ 0 ≠0 0 0 ≠0 ≠0 0 0 0 0 0 0
    65–70 \x41–\x46 \101–\106 ABCDEF 0 ≠0 0 0 ≠0 0 ≠0 ≠0 ≠0 0 0 ≠0
    71–90 \x47–\x5A \107–\132 GHIJKLMNOP
    QRSTUVWXYZ     		0 ≠0 0 0 ≠0 0 ≠0 ≠0 ≠0 0 0 0
    91–96 \x5B–\x60 \133–\140 [\]^_` 0 ≠0 0 0 ≠0 ≠0 0 0 0 0 0 0
    97–102 \x61–\x66 \141–\146 abcdef 0 ≠0 0 0 ≠0 0 ≠0 ≠0 0 ≠0 0 ≠0
    103–122 \x67–\x7A \147–\172 ghijklmnop
    qrstuvwxyz     		0 ≠0 0 0 ≠0 0 ≠0 ≠0 0 ≠0 0 0
    123–126 \x7B–\x7E \173–\176 {|}~ 0 ≠0 0 0 ≠0 ≠0 0 0 0 0 0 0
    127 \x7F \177 backspace character (DEL) ≠0 0 0 0 0 0 0 0 0 0 0 0
    Conversions to numeric formats
    Defined in header <stdlib.h>
    		converts a byte string to a floating-point value
    (function) [edit]
    (C99)
    		 converts a byte string to an integer value
    (function) [edit]
    (C99)
    		 converts a byte string to an integer value
    (function) [edit]
    (C99)
    		 converts a byte string to an unsigned integer value
    (function) [edit]
    (C99)(C99)
    		 converts a byte string to a floating-point value
    (function) [edit]
    Defined in header <inttypes.h>
    (C99)(C99)
    		 converts a byte string to intmax_t or uintmax_t
    (function) [edit]
    String manipulation
    Defined in header <string.h>
    (C11)
    		 copies one string to another
    (function) [edit]
    (C11)
    		 copies a certain amount of characters from one string to another
    (function) [edit]
    (C11)
    		 concatenates two strings
    (function) [edit]
    (C11)
    		 concatenates a certain amount of characters of two strings
    (function) [edit]
    		transform a string so that strcmp would produce the same result as strcoll
    (function) [edit]
    String examination
    Defined in header <string.h>
    (C11)
    		 returns the length of a given string
    (function) [edit]
    		compares two strings
    (function) [edit]
    		compares a certain amount of characters of two strings
    (function) [edit]
    		compares two strings in accordance to the current locale
    (function) [edit]
    		finds the first occurrence of a character
    (function) [edit]
    		finds the last occurrence of a character
    (function) [edit]
    		returns the length of the maximum initial segment that consists
    of only the characters found in another byte string
    (function) [edit]
    		returns the length of the maximum initial segment that consists
    of only the characters not found in another byte string
    (function) [edit]
    		finds the first location of any character in one string, in another string
    (function) [edit]
    		finds the first occurrence of a substring of characters
    (function) [edit]
    (C11)
    		 finds the next token in a byte string
    (function) [edit]
    Character array manipulation
    Defined in header <string.h>
    		searches an array for the first occurrence of a character
    (function) [edit]
    		compares two buffers
    (function) [edit]
    (C23)(C11)
    		 fills a buffer with a character
    (function) [edit]
    (C11)
    		 copies one buffer to another
    (function) [edit]
    (C11)
    		 moves one buffer to another
    (function) [edit]
    Miscellaneous
    Defined in header <string.h>
    (C11)(C11)
    		 returns a text version of a given error code
    (function) [edit]